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Flood disaster is a serious threat to urban security, and flood control and drainage planning is an important measure to ensure urban security. This paper takes planning guidance to empirical research as the main axis. On the basis of meteorological data and spatial data, through the analysis on the risk of disaster-causing factors of flood disasters, the sensitivity of disaster-pregnant environment, the vulnerability of disaster-bearing bodies and the ability of disaster prevention and mitigation, 12 indicators are selected to construct a comprehensive evaluation index system for flood disaster risk. Handan City is taken as an example to study the spatial distribution characteristics of flood disaster risk. Based on AHP, weights are assigned to the evaluation indicators of flood disasters in the system, and the risk visualization is carried out in GIS. According to comprehensive risk assessment results, it could put forward corresponding disaster prevention planning strategy for defending flood disaster in Handan City. [ABSTRACT FROM AUTHOR]